Answers riddle with penetration (7)

I believe the answer is:

rawness

I'm a little stuck... Click here to teach me more about this clue!

'penetration' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?

'answers riddle' is the wordplay.
'answers' can be anagrammed to 'RAWNESS'.
However, I'm unsure how this is indicated.

'with' is the link.

Can you help me to learn more?

(Other definitions for rawness that I've seen before include "Answers (anag)" , "Uncooked state" .)

I've seen this clue in the Sydney Morning Herald.

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